Interface description
CX20x3
22
Version: 1.0
5.4.3
RS232 (N030)
The optional N030 interface provides an RS232 interface (X300). The RS232 interface is implemented on a
9-pin D-sub connector.
Fig. 9: RS232 interface X300.
The maximum baud rate on both channels is 115 kbit. The interface parameters are set via the operating
system or from the PLC program.
Table 15: RS232 interface X300, pin assignment.
PIN
Signal
Type
Description
1
DCD
Signal in
Data Carrier Detected
2
RxD
Signal in
Receive Data
3
TxD
Signal out
Transmit Data
4
DTR
Signal out
Data Terminal Ready
5
GND
Ground
Ground
6
DSR
Signal in
Dataset Ready
7
RTS
Signal out
Request to Send
8
CTS
Signal in
Clear to Send
9
DCD
Signal in
Data Carrier Detected